Apparatus, system and method for using a diamond-impregnated wire to cut an object

ABSTRACT

An apparatus, a system and a method may use a diamond-impregnated wire loop to cut an underwater pipeline. The apparatus may have a frame, a carriage attached to the frame and/or pulleys connected to the carriage. The diamond-impregnated wire loop may be connected to the pulleys. The carriage may move relative to the frame to direct the diamond-impregnated wire loop in a forward direction relative to the frame and/or through the pipeline.

BACKGROUND OF THE INVENTION

The present invention generally relates to an apparatus, a system and amethod for using a diamond-impregnated wire to cut an object. Morespecifically, the present invention relates to an apparatus that may usea diamond-impregnated wire loop to cut an underwater pipeline. Theapparatus may have a frame, a carriage attached to the frame and/orpulleys connected to the carriage. The diamond-impregnated wire loop maybe connected to the pulleys.

Offshore platforms have a base structure formed by pipelines. If theoffshore platforms are decommissioned and/or dismantled, the pipelinesmust be removed. The pipelines may extend into the sea floor. Therefore,pipelines are typically removed from the sea floor by cutting thepipelines at a location on the pipeline adjacent to the sea floor. Knownsystems exist for cutting the pipelines. For example, known systems forcutting the pipelines may use diamond-impregnated beads affixed to acontinuous strand of rubber-encapsulated steel wire that is looped ontoa drive pulley and driven at a high speed.

The known systems require clearance on multiple sides of the pipeline.The clearance required by the known systems may hinder the systems fromcutting the pipeline. For example, the clearance required by the knownsystems may increase a distance between the cut and the sea floor. Thus,after cutting by the known systems, a portion of the pipeline maycontinue to extend from the sea floor. Moreover, the clearance requiredby the known systems may prevent the systems from cutting the pipelineif the pipeline is adjacent to obstructions. Thus, known systems may notcut the pipeline if the pipeline is adjacent to obstructions.

SUMMARY OF THE INVENTION

The present invention generally relates to an apparatus, a system and amethod for using a diamond impregnated wire to cut an object. Morespecifically, the present invention relates to an apparatus that may usea diamond impregnated wire loop to cut an underwater pipeline. Theapparatus may have a frame, a carriage attached to the frame and/orpulleys connected to the carriage. The diamond impregnated wire may beconnected to the pulleys. The carriage may move relative to the frame todirect the diamond impregnated wire loop in a forward direction relativeto the frame and/or through the pipeline.

To this end, in an embodiment of the present invention, an apparatus forcutting an object is provided. The apparatus has a carriage having afirst end and a second end wherein the second end is located in aposition opposite to the first end; a first pulley connected to thecarriage wherein the first pulley is adjacent to the second end of thecarriage; a second pulley connected to the carriage wherein the secondpulley is adjacent to the second end of the carriage; adiamond-impregnated wire attached to the first pulley and the secondpulley wherein the diamond-impregnated wire travels through the firstpulley and the second pulley; and a frame having a first end and asecond end located in a position opposite to the first end wherein thecarriage is connected to the frame and further wherein the second end ofthe frame is located at a distance from the second end of the carriagewherein the carriage moves from a first position relative to the frameto a second position relative to the frame and further wherein thecarriage subsequently moves from the second position to the firstposition wherein the distance from the second end of the frame to thesecond end of the carriage in the first position is less than thedistance from the second end of the frame to the second end of thecarriage in the second position.

In an embodiment, the apparatus has an actuator connected to the framewherein the actuator has a tube and a cylinder which extends from thetube and further wherein movement of the cylinder in a first directionrelative to the tube moves the carriage from the first position to thesecond position wherein movement of the cylinder in a second directionrelative to the tube which is opposite to the first direction moves thecarriage from the second position to the first position.

In an embodiment, the apparatus has a shaft connected to the second endof the frame wherein an arm which is substantially perpendicular to theshaft connects the shaft to the carriage and further wherein rotation ofthe shaft in a first direction uses the arm to move the carriage fromthe first position to the second position wherein rotation of the shaftin a second direction which is opposite to the first direction uses thearm to move the carriage from the second position to the first position.

In an embodiment, the apparatus has a third pulley connected to thecarriage wherein the third pulley is adjacent to the first end of thecarriage and further wherein the wire travels through the first pulley,the second pulley and the third pulley.

In an embodiment, the apparatus has a connector that connects the firstend of the carriage to the frame wherein the first end of the carriageis pivotally connected to the connector such that an angle between theframe and the carriage in the second position is greater than the anglebetween the frame and the carriage in the first position.

In an embodiment, the diamond-impregnated wire is electroplated with asingle layer of diamond beads.

In an embodiment, the apparatus has a first rail, a second rail and abar of the frame wherein the bar connects the first rail to the secondrail and further wherein the bar is substantially perpendicular to thefirst rail and the second rail wherein the first rail and the secondrail are substantially parallel to each other.

In an embodiment, the apparatus has a column of the carriage which isconnected to the first end of the frame wherein the column is located atthe first end of the carriage and further wherein rotation of the columnin a first direction moves the carriage from the first position to thesecond position wherein rotation of the column in a second directionwhich is opposite to the first direction moves the carriage from thesecond position to the first position.

In an embodiment, the apparatus has a first column and a second columnof the carriage wherein the first column and the second column aresubstantially parallel to each other and further wherein the firstcolumn and the second column extend from the first end of the carriageto the second end of the carriage wherein the first pulley is connectedto the first column and the second pulley is connected to the secondcolumn.

In an embodiment, the distance from the first end of the frame to thefirst end of the carriage in the first position is less than thedistance from the first end of the frame to the first end of thecarriage in the second position.

In another embodiment of the present invention, a method for cutting anobject using a carriage connected to a frame is provided. Pulleys areconnected to the carriage, and a diamond-impregnated wire is connectedto the pulleys. The carriage has a first end and a second end located ina position opposite to the first end, and the frame has a first end anda second end located in a position opposite to the first end. The methodhas the steps of moving the carriage from a first position relative tothe frame to a second position relative to the frame wherein the firstend of the carriage is adjacent to the first end of the frame if thecarriage is located in the first position and further wherein moving thecarriage from the first position to the second position moves the firstend of the carriage in a first direction wherein the second end of thecarriage is adjacent to the second end of the frame if the carriage islocated in the first position and further wherein moving the carriagefrom the first position to the second position moves the second end ofthe carriage in a second direction; cutting the object wherein theobject is cut by the diamond-impregnated wire as the carriage moves fromthe first position relative to the frame to the second position relativeto the frame; and moving the carriage from the second position to thefirst position.

In an embodiment, the method has the step of pivoting a first clamp anda second clamp inward toward each other before moving the carriagerelative to the frame wherein the first clamp and the second clamp areattached to the frame and further wherein the first clamp and the secondclamp are pivoted outward relative to each other after cutting theobject.

In an embodiment, the method has the step of moving a cylinder connectedto a tube from a first position relative to the tube to a secondposition relative to the tube wherein moving the cylinder from the firstposition relative to the tube to the second position relative to thetube moves the carriage from the first position relative to the frame tothe second position relative to the frame and further wherein moving thecylinder from the second position relative to the tube to the firstposition relative to the tube moves the carriage from the secondposition relative to the frame to the first position relative to theframe.

In an embodiment, the method has the step of rotating a shaft connectedto the frame wherein rotating the shaft in a first direction moves thecarriage from the first position to the second position and furtherwherein rotating the shaft in a second direction opposite to the firstdirection moves the carriage from the second position to the firstposition relative.

In an embodiment, the second direction is substantially perpendicular tothe first direction.

In another embodiment of the present invention, a system for cutting anobject is provided. The system has a frame; a carriage connected to theframe wherein the carriage moves from a first position relative to theframe to a second position relative to the frame and further wherein thecarriage is substantially parallel to the frame if the carriage is inthe first position wherein the frame is angled relative to the frame ifthe carriage is in the second position; pulleys connected to thecarriage; a wire attached to the pulleys wherein the wire travelsthrough the pulleys; diamond beads attached to the wire; a first clamphaving a first end and a second end located in a position opposite tothe first end wherein the first end of the first clamp is connected tothe frame; a second clamp connected to the frame having a first end anda second end located in a position opposite to the first end wherein thefirst end of the second clamp is connected to the frame; and a rodconnected to the first clamp and the second clamp wherein the rodrotates in a first direction to pivot the second end of the first clampand the second end of the second clamp toward each other and furtherwherein the rod rotates in a second direction opposite to the firstdirection to pivot the second end of the first clamp and the second endof the second clamp away from each other.

In an embodiment, the system has a first arm and a second arm connectedto the rod wherein the first arm and the second arm are substantiallyperpendicular to the rod and further wherein the first clamp isconnected to the rod by the first arm and the second clamp is connectedto the rod by the second arm.

In an embodiment, the system has an actuator having a cylinder connectedto the rod wherein moving the cylinder rotates the rod.

In an embodiment, the system has a first bar and a second bar of thefirst clamp which are substantially parallel to each other wherein thefirst bar and the second bar extend from the first end of the firstclamp to the second end of the first clamp.

In an embodiment, the system has a first column and a second column ofthe carriage and a first rail and a second rail of the frame wherein thefirst column and the second column are substantially parallel to thefirst rail and the second rail if the carriage is in the first positionwherein the first column and the second column are angled relative tothe first rail and the second rail if the carriage is in the secondposition.

It is, therefore, an advantage of the present invention to provide anapparatus, a system and a method for using a diamond-impregnated wire tocut an object.

Another advantage of the present invention is to provide an apparatus, asystem and a method for using a diamond-impregnated wire to cut anobject which may use a diamond-impregnated wire to cut an underwaterpipeline.

A further advantage of the present invention is to provide an apparatus,a system and a method for using a diamond-impregnated wire to cut anobject which may rotate the diamond-impregnated wire relative to theplane of the cut.

Yet another advantage of the present invention is to provide anapparatus, a system and a method for using a diamond-impregnated wire tocut an object which may reduce wear on the diamond-impregnated wirerelative to known cutting apparatuses.

Another advantage of the present invention is to provide an apparatus, asystem and a method for using a diamond-impregnated wire to cut anobject which may reduce time required to cut an object relative to knowncutting apparatuses.

A further advantage of the present invention is to provide an apparatus,a system and a method for using a diamond-impregnated wire to cut anobject which may reduce space required to install and/or operate theapparatus relative to known cutting apparatuses.

Yet another advantage of the present invention is to provide anapparatus, a system and a method for using a diamond-impregnated wire tocut an object which may reduce space required to transport and/or storethe apparatus relative to known cutting apparatuses.

Another advantage of the present invention is to provide an apparatus, asystem and a method for using a diamond-impregnated wire to cut anobject which may be controlled using a remotely operated vehicle (ROV)interface.

A further advantage of the present invention is to provide an apparatus,a system and a method for using a diamond-impregnated wire to cut anobject which may operate using hydraulic power.

Yet another advantage of the present invention is to provide anapparatus, a system and a method for using a diamond-impregnated wire tocut an object which may cut a pipeline having a diameter from twentyfour inches to forty inches.

Another advantage of the present invention is to provide an apparatus, asystem and a method for using a diamond-impregnated wire to cut anobject which may enable replacement of the diamond-impregnated wirewithout removing the apparatus from a pipeline.

A further advantage of the present invention is to provide an apparatus,a system and a method for using a diamond-impregnated wire to cut anobject which may cut adjacent to a seabed without excavation of theseabed.

Yet another advantage of the present invention is to provide anapparatus, a system and a method for using a diamond-impregnated wire tocut an object which may reduce a volume of excavation for sub-seabedcuts relative to known cutting apparatuses.

Another advantage of the present invention is to provide an apparatus, asystem and a method for using a diamond-impregnated wire to cut anobject which may have a self-compensating feed circuit which mayautomatically adjust the feed rate to an efficient cutting speed.

A further advantage of the present invention is to provide an apparatus,a system and a method for using a diamond-impregnated wire to cut anobject which may increase the cutting horsepower of the diamondimpregnated wire relative to known cutting apparatuses.

Yet another advantage of the present invention is to provide anapparatus, a system and a method for using a diamond-impregnated wire tocut an object which may be installed in any orientation.

Another advantage of the present invention is to provide an apparatus, asystem and a method for using a diamond-impregnated wire to cut anobject which may use an electroplated wire.

A further advantage of the present invention is to provide an apparatus,a system and a method for using a diamond-impregnated wire to cut anobject which may reduce labor and time required to install and/or removethe apparatus relative to known cutting apparatuses.

Yet another advantage of the present invention is to provide anapparatus, a system and a method for using a diamond-impregnated wire tocut an object which may cut multiple-string underwater pipelines whichmay contain aggregate fill material.

Another advantage of the present invention is to provide an apparatus, asystem and a method for using a diamond-impregnated wire to cut anobject which may achieve linear wire travel.

A further advantage of the present invention is to provide an apparatus,a system and a method for using a diamond-impregnated wire to cut anobject which may have a pressure compensation valve.

Moreover, an advantage of the present invention is to provide anapparatus, a system and a method for using a diamond-impregnated wire tocut an object which may reduce the weight of the apparatus relative toknown cutting apparatuses.

Additional features and advantages of the present invention aredescribed in, and will be apparent from, the detailed description of thepresently preferred embodiments and from the drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates a perspective front view of a cutting apparatus in aretracted position in an embodiment of the present invention.

FIG. 2 illustrates a perspective rear view of a cutting apparatus in aretracted position in an embodiment of the present invention.

FIG. 3 illustrates a perspective front view of a cutting apparatus in anextended position in an embodiment of the present invention.

FIG. 4 illustrates a perspective rear view of a cutting apparatus in anextended position in an embodiment of the present invention.

FIG. 5 illustrates a side view of a cutting apparatus in a retractedposition in an embodiment of the present invention.

FIG. 6 illustrates a side view of a cutting apparatus in an extendedposition in an embodiment of the present invention.

FIG. 7 illustrates a perspective front view of a cutting apparatus in aretracted position with a pipeline in an embodiment of the presentinvention.

FIG. 8 illustrates a perspective front view of a cutting apparatus in anextended position with a pipeline in an embodiment of the presentinvention.

FIG. 9 illustrates a perspective rear view of a cutting apparatus in aretracted position with a pipeline in an embodiment of the presentinvention.

FIG. 10 illustrates a perspective rear view of a cutting apparatus in anextended position with a pipeline in an embodiment of the presentinvention.

FIG. 11 illustrates a side view of a cutting apparatus in a retractedposition with a pipeline in an embodiment of the present invention.

FIG. 12 illustrates a side view of a cutting apparatus in an extendedposition with a pipeline in an embodiment of the present invention.

FIG. 13 illustrates a perspective front view of a cutting apparatus in aretracted position with a pipeline in an embodiment of the presentinvention.

FIG. 14 illustrates a perspective front view of a cutting apparatus inan extended position with a pipeline in an embodiment of the presentinvention.

FIG. 15 illustrates a perspective rear view of a cutting apparatus in aretracted position with a pipeline in an embodiment of the presentinvention.

FIG. 16 illustrates a perspective rear view of a cutting apparatus in anextended position with a pipeline in an embodiment of the presentinvention.

FIG. 17 illustrates a side view of a cutting apparatus in a retractedposition with a pipeline in an embodiment of the present invention.

FIG. 18 illustrates a side view of a cutting apparatus in an extendedposition with a pipeline in an embodiment of the present invention.

FIGS. 19A and 19B illustrate a side view of a first actuator of acutting apparatus in embodiments of the present invention.

FIG. 19C illustrates a perspective view of a first actuator of a cuttingapparatus in embodiments of the present invention.

FIG. 20 illustrates a perspective front view of clamp system attached toa cutting apparatus in a retracted position in an embodiment of thepresent invention.

FIG. 21 illustrates a perspective front view of a clamp system for acutting apparatus in an embodiment of the present invention.

FIGS. 22A and 22B illustrate a perspective rear view of a clamp systemfor a cutting apparatus in an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PRESENTLY PREFERRED EMBODIMENTS

The present invention generally relates to an apparatus, a system and amethod for using a diamond-impregnated wire to cut an object. Morespecifically, the present invention relates to an apparatus that may usea diamond-impregnated wire loop to cut an underwater pipeline. Theapparatus may use the diamond-impregnated wire loop to cut single-stringand/or multiple-string underwater pipelines which may contain aggregatefill material. The apparatus may have a frame, a carriage attached tothe frame and/or pulleys connected to the carriage. Thediamond-impregnated wire loop may be connected to the pulleys. Thecarriage may move relative to the frame to direct thediamond-impregnated wire loop in a forward direction relative to theframe and/or through the pipeline. Hydraulic power may move the carriagerelative to the frame. The frame of the apparatus may be positionedsubstantially parallel to the longitudinal direction of the pipelineduring cutting.

Referring now to the drawings wherein like numerals refer to like parts,FIGS. 1-18 generally illustrate a cutting apparatus 10 in embodiments ofthe present invention. The cutting apparatus 10 may have a frame 100and/or a carriage 200 which may be connected to the frame 100. Thecarriage 200 may move relative to the frame 100 as described in moredetail hereafter. The carriage 200 may have at least two pulleys. Forexample, the carriage 200 may have a first pulley 201, a second pulley202, a third pulley 203 and/or a fourth pulley 204. The carriage 200 mayhave a first end 210 and a second end 220 located in a position oppositeto the first end 210. The first pulley 201 and/or the second pulley 202may be located adjacent to the first end 210 of the carriage 200, and/orthe third pulley 203 and/or the fourth pulley 204 may be locatedadjacent to the second end 220 of the carriage 200.

A wire 50 may be connected to the carriage 200. For example, the wire 50may be connected to the first pulley 201, the second pulley 202, thethird pulley 203 and/or the fourth pulley 204. For example, in anembodiment, the wire 50 may be a loop that travels through the firstpulley 201, the second pulley 202, the third pulley 203 and/or thefourth pulley 204. In an embodiment, the wire 50 may be a loop formed bya wire having a length of twenty feet. Diamond beads may be adhered to,impregnated into and/or affixed on the wire 50. The wire 50 may have asurface area, and the diamond beads may be distributed substantiallycontinuously and/or evenly over the surface area of the wire 50. In anembodiment, the diamond beads may be sintered to the wire 50. In anotherembodiment, the diamond beads may be electroplated on the wire 50 byusing electric current to coat the wire 50 with a single layer of thediamond beads. In an embodiment, the wire 50 may be a steel wire. Thepresent invention is not limited to a specific embodiment of the wire50.

One or more of the first pulley 201, the second pulley 202, the thirdpulley 203 and/or the fourth pulley 204 may be a motorized pulley. Themotorized pulley may be connected to a pulley motor 207 which mayprovide power to the motorized pulley. In an embodiment, the pulleymotor 207 may be a hydraulic motor. The pulley motor 207 may be anymotor known to one having ordinary skill in the art. The motorizedpulley may rotate to direct the wire 50 through the first pulley 201,the second pulley 202, the third pulley 203 and/or the fourth pulley204. The pulley motor 207 may control a rotation rate of the motorizedpulley. The pulley motor 207 may control a wire speed at which the wire50 travels through the first pulley 201, the second pulley 202, thethird pulley 203 and/or the fourth pulley 204 by adjusting the rotationrate of the motorized pulley. The present invention is not limited to aspecific embodiment of the motorized pulley or the number of pulleyswhich are motorized pulleys, and the motorized pulley may be any pulleywhich directs the wire 50 through the first pulley 201, the secondpulley 202, the third pulley 203 and/or the fourth pulley 204.

The frame 100 may have a base 110. The frame 100 may have a first rail111 and/or a second rail 112 which may be substantially parallel to eachother and/or which may extend from the base 110. The first rail 111 mayhave a first end 121 and a second end 122 located in a position oppositeto the first end 121. The second rail 112 may have a first end 131 and asecond end 132 located in a position opposite to the first end 131. Adistance from the first end 121 of the first rail 111 to the second end122 of the first rail 111 may be approximately equal to a distance fromthe first end 131 of the second rail 112 to the second end 132 of thesecond rail 112. The base 110 may be connected to the second end 122 ofthe first rail 111 and/or the second end 132 of the second rail 112.

The frame 100 may have a first bar 113, a second bar 114 and/or a thirdbar 115 which may connect the first rail 111 to the second rail 112. Thefirst bar 113 may be connected to the first end 121 of the first rail111 and/or the first end 131 of the second rail 112. The first bar 113,the second bar 114 and/or the third bar 115 may be substantiallyperpendicular to the first rail 111 and/or the second rail 112. Thefirst bar 113, the second bar 114 and/or the third bar 115 may besubstantially parallel to each other.

The frame 100 may have first rings 118 and/or second rings 119 which maybe located in a position opposite to the first rings 118. For example,the first rings 118 may be connected to the first bar 113, and/or thesecond rings 119 may be connected to the base 110. The first rings 118and/or the second rings 119 may enable transportation of the cuttingapparatus 10. For example, a transporting vehicle (not shown) may havehooks which may insert into the first rings 118 and/or the second rings119 to transport the cutting apparatus 10.

The frame 100 may be connected to one or more plates. For example, asshown in FIGS. 1-18, a first side plate 101, a central plate 102 and/ora second side plate 103 may be connected to the frame 100. The firstside plate 101, the central plate 102 and/or the second side plate 103may be attached to the second bar 114 and/or the third bar 115. Thefirst side plate 101, the central plate 102 and/or the second side plate103 may contact a pipeline 300 to align the pipeline 300 with thecutting apparatus 10 for cutting the pipeline 300 with the wire 50. Thepresent invention is not limited to cutting a pipeline, and any objectmay be cut using the cutting apparatus 10.

In an embodiment, one or more of the first side plate 101, the centralplate 102 and/or the second side plate 103 may provide a substantiallyflat surface which may face away from the frame 100. The first sideplate 101, the central plate 102 and/or the second side plate 103 may beany shape. In an embodiment, the first side plate 101, the central plate102 and/or the second side plate 103 may be substantially rectangular.The first side plate 101 and/or the second side plate 103 may be angledrelative to the central plate 102 to align the pipeline 300 with thecutting apparatus 10.

The carriage 200 may have a first column 11, a second column 12, a thirdcolumn 13, a fourth column 14, a fifth column 15 and/or a sixth column16. The first column 11, the third column 13, the fourth column 14and/or the sixth column 16 may extend from the first end 210 of thecarriage 200 to the second end 220 of the carriage 200. The secondcolumn 12, the third column 13, the fifth column 15 and/or the sixthcolumn 16 may be substantially parallel to each other. The first column11, the second column 12 and/or the third column 13 may be adjacent toeach other. In an embodiment, the first pulley 201 and/or the fourthpulley 204 may be connected to and/or may be adjacent to the firstcolumn 11. The fourth column 14, the fifth column 15 and/or the sixthcolumn 16 may be adjacent to each other. In an embodiment, the secondpulley 202 and/or the third pulley 203 may be connected to and/or may beadjacent to the fourth column 14.

The carriage 200 may have a first foot 116 and/or a second foot 117which may be located at the second end 220 of the carriage 200. Thefirst foot 116 and/or a second foot 117 may be any shape. In anembodiment, the first foot 116 and/or the second foot 117 may berectangular. The first foot 116 may be adjacent to the fourth pulley204, and/or the second foot 117 may be adjacent to the third pulley 203.The first column 11, the second column 12 and/or the third column 13 mayconnect to the first foot 116. The fourth column 14, the fifth column 15and/or the sixth column 16 may connect to the second foot 117. A firstguide pulley 205 may be connected to the first foot 116, and/or a secondguide pulley 206 may be connected to the second foot 117. The wire 50may travel through the first guide pulley 205 and/or the second guidepulley 206 as the wire 50 travels between the third pulley 203 and thefourth pulley 204.

The carriage 200 may have a seventh column 17 which may connect thefirst column 11 to the fourth column 14. The seventh column 17 may belocated at the first end 210 of the carriage 200. The seventh column 17may be substantially parallel to the first bar 113. The seventh column17 may be connected to the frame 100. For example, the seventh column 17may be connected to the first rail 111 of the frame 100 by a firstconnector 21, and/or the seventh column 17 may be connected to thesecond rail 112 of the frame 100 by a second connector 22. The seventhcolumn 17 may be pivotally connected to the first connector 21 and/orthe second connector 22. Pivoting the seventh column 17 relative to thefirst connector 21 and/or the second connector 22 may rotate the seventhcolumn 17 relative to the frame 100, the first connector 21 and/or thesecond connector 22. Rotation of the seventh column 17 relative to theframe 100, the first connector 21 and/or the second connector 22 maypivot the first column 11 and/or the fourth column 14 relative to theframe 100.

The carriage 200 may have an eighth column 18 which may connect thethird column 13 to the sixth column 16. The eighth column 18 may belocated at the first end 210 of the carriage 200. The eighth column 18may be substantially parallel to the first bar 113 and/or the seventhcolumn 17. The eighth column 18 may be connected to the frame 100. Forexample, the eighth column 18 may be connected to the first rail 111 ofthe frame 100 by the first connector 21, and/or the eighth column 18 maybe connected to the second rail 112 of the frame 100 by the secondconnector 22. The eighth column 18 may be pivotally connected to thefirst connector 21 and/or the second connector 22. Pivoting the eighthcolumn 18 relative to the first connector 21 and/or the second connector22 may rotate the eighth column 18 relative to the frame 100, the firstconnector and/or the second connector 22. Rotation of the eighth column18 relative to the frame 100, the first connector 21 and/or the secondconnector 22 may pivot the third column 13 and/or the sixth column 16relative to the frame 100.

The frame 100 may have a shaft 33. A first arm 31 and/or a second arm 32may extend from the shaft 33. The first arm 31 and/or the second arm 32may be rigidly connected to a shaft 33. The first arm 31 may be locatedin a position opposite to the second arm 32. The shaft 33 may besubstantially perpendicular to the first arm 31 and/or the second arm32. The shaft 33 may be connected to the frame 100. For example, in anembodiment, the shaft 33 may be pivotally connected to the base 110 ofthe frame 100. The shaft 33 may be connected to the carriage 200. Forexample, in an embodiment, the shaft 33 may be pivotally connected tothe second column 12 and/or the fifth column 15.

The shaft 33 may rotate relative to the frame 100. Because the first arm31 and/or the second arm 32 may be rigidly connected to the shaft 33,rotation of the shaft 33 relative to the frame 100 may pivot the firstarm 31 and/or the second arm relative to the frame 100. Pivoting thefirst arm 31 relative to the frame 100 may increase a size of an anglebetween the first arm 31 and the first rail 111. Pivoting the second arm32 relative to the frame 100 may increase a size of an angle between thesecond arm 32 and the second rail 112. Therefore, pivoting the first arm31 and/or the second arm 32 relative to the frame 100 may move thecarriage 200 from a retracted position to an extended position relativeto the frame 100 as discussed in more detail hereafter.

A first actuator 400 may rotate the shaft 33 to pivot the first arm 31and/or the second arm 32 relative to the frame 100. The first actuator400 may be connected to the shaft 33 and/or the frame 100. In anembodiment, the first actuator 400 may be pivotally connected to thesecond bar 114. For example, the first actuator 400 may connect to thesecond bar 114 at a pivot 404 on the first actuator 400. The pivot 404may enable the first actuator 400 to pivot relative to the frame 100and/or the second bar 114. The first actuator 400 may have a firstcylinder 401 which may extend from the first actuator 400. The firstcylinder 401 may be substantially perpendicular to the shaft 33. In anembodiment, an actuator arm 403 may connect the first cylinder 401 tothe frame 100. For example, the actuator arm 403 may connect the firstcylinder 401 to the shaft 33.

As generally illustrated in FIGS. 19A-C, the first actuator 400 may havea hydraulic drive motor 410, a drive pulley 411 and/or a driven pulley412. The drive pulley 411 may be connected to the hydraulic drive motor410, and/or the hydraulic drive motor 410 may rotate the drive pulley411. A belt 415 may be attached to the drive pulley 411 and/or thedriven pulley 412 such that rotation of the drive pulley 411 by thehydraulic drive motor 410 may rotate the driven pulley 412 using thebelt 415.

The first actuator 400 may have an actuator tube 420 and/or a secondcylinder 402 which may be located in the actuator tube 420. The secondcylinder 402 may extend from the driven pulley 412. The second cylinder402 may be connected to the driven pulley 412 such that rotation of thedriven pulley 412 may rotate the second cylinder 402. The first cylinder401 may have a larger radius than the second cylinder 402 such that thesecond cylinder 402 may insert into the first cylinder 401. The firstcylinder 401 may have a first end 405 which may be located in theactuator tube 420, and/or the second cylinder 402 may insert into thefirst end 405 of the first cylinder 401. The first end 405 of the firstcylinder 401 may be connected to a bushing 430. The first cylinder 401may have a second end 406 located in a position opposite to the firstend 405. The second end 406 of the first cylinder 401 may have a hole440 which may extend through the second end 406 of the first cylinder401. The second end 406 of the first cylinder 401 may be connected to abearing 441 which may be located in the hole 440. The actuator arm 430may pivotally connect to the second end of the first cylinder 401 usingthe hole 440 and/or the bearing 441.

The second cylinder 402 may have threads 431. The threads 431 of thesecond cylinder 402 may connect the second cylinder 402 to the bushing430 such that rotation of the second cylinder 402 in a first directionmay cause the first cylinder 401 to move from an extended position to aretracted position relative to the actuator tube 420. Rotation of thesecond cylinder 402 in a second direction opposite to the firstdirection may cause the first cylinder 401 to move from the retractedposition to the extended position relative to the actuator tube 420.

Movement of the first cylinder 401 may rotate the shaft 33. For example,the actuator arm 403 may connect the shaft 33 to the second end 406 ofthe first cylinder 401. Movement of the first cylinder 401 from theextended position to the retracted position relative to the actuatortube 420 may move the actuator arm 403 toward the actuator tube 420 torotate the shaft 33 in a first direction. Rotation of the shaft 33 inthe first direction may cause the first arm 31 and/or the second arm 32to pivot relative to the frame 100. As previously discussed, thepivoting of the first arm 31 relative to the frame 100 may increase thesize of the angle between the first arm 31 and the first rail 111,and/or the pivoting of the second arm 32 relative to the frame 100 mayincrease the size of the angle between the second arm 32 and the secondrail 112. Therefore, the first actuator 400 may rotate the shaft 33 topivot the first arm 31 and/or the second arm 32 relative to the frame100. Pivoting the first arm 31 and/or the second arm 32 relative to theframe 100 may move the carriage 200 from the retracted position to theextended position.

As generally illustrated in FIGS. 1, 2, 5, 7, 9, 11, 13, 15 and 17, thecarriage 200 may be in the retracted position relative to the frame 100.In the retracted position, the first cylinder 401 may be in the extendedposition relative to the first actuator 400. In the retracted position,the first end 210 of the carriage 200 may be adjacent to the first end121 of the first rail 111 of the frame 100 and/or the first end 131 ofthe second rail 112 of the frame 100. In the retracted position, thesecond end 220 of the carriage 200 may be adjacent to the second end 122of the first rail 111 of the frame 100 and/or the second end 132 of thesecond rail 112 of the frame 100.

As generally illustrated in FIGS. 3, 4, 6, 8, 10, 12, 14, 16 and 18,movement of the first cylinder 401 from the extended position to theretracted position relative to the first actuator 400 may move thecarriage 200 from the retracted position to the extended positionrelative to the frame 100. In the extended position, the first end 210of the carriage 200 may be located between the first end 121 of thefirst rail 111 of the frame 100 and the second end 122 of the first rail111 of the frame 100. In the extended position, the first end 210 of thecarriage 200 may be located between the first end 131 of the second rail112 of the frame 100 and the second end 132 of the second rail 112 ofthe frame 100. Movement of the carriage 200 from the retracted positionto the extended position may move the second end 220 of the carriage 200away from the second end 122 of the first rail 111 of the frame 100and/or the second end 132 of the second rail 112 of the frame 100.

Movement of the carriage 200 from the retracted position to the extendedposition may move the first connector 21 from the first end 121 of thefirst rail 111 toward the second end 122 of the first rail 111. Movementof the carriage 200 from the retracted position to the extended positionmay move the second connector 22 from the first end 131 of the secondrail 112 toward the second end 132 of the first rail 112. For example,the first rail 111 may have first grooves (not shown), and/or the firstconnector 21 may be inserted into the first grooves to enable movementof the first connector 21 relative to the first end 121 of the firstrail 111. The second rail 112 may have second grooves (not shown),and/or the second connector 22 may be inserted into the second groovesto enable movement of the second connector 22 relative to the first end131 of the second rail 112. The first connector 21 and the secondconnector 22 may movably connect to the first rail 111 and/or the secondrail 112 using any means known to one having ordinary skill in the art.

Movement of the carriage 200 from the retracted position to the extendedposition may rotate the seventh column 17 to pivot the first column 11and/or the third column 13 relative to the first connector 21. Movementof the carriage 200 from the retracted position to the extended positionmay rotate the eighth column 18 to pivot the fourth column 14 and/or thesixth column 16 relative to the second connector 22.

Movement of the carriage 200 from the retracted position to the extendedposition may move the wire 50 through the pipeline 300. Movement of thewire 50 through the first pulley 201, the second pulley 202, the thirdpulley 203 and/or the fourth pulley 204 during movement of the wire 50through the pipeline 300 may cut the pipeline 300. For example, thefirst pulley 201, the second pulley 202, the third pulley 203 and/or thefourth pulley 204 may rotate relative to the carriage 200 as thepipeline 300 is cut and/or may transfer torque to the wire 50 as thepipeline 300 is cut.

In an embodiment, the wire 50 may cut the pipeline 300 with asubstantially linear cut such that the cut may form one plane. The firstpulley 201, the second pulley 202, the third pulley 203 and/or thefourth pulley 203 may rotate the wire 50 relative to the plane of thecut. Rotation of the wire 50 relative to the plane of the cut mayincrease use of the surface area of the wire 50. Increased use of thesurface area of the wire 50 may decrease wear of the wire 50.

The carriage 200 may move from the extended position to the retractedposition. For example, the carriage 200 may move from the extendedposition to the retracted position after cutting the pipeline 300. As afurther example, the carriage 200 may move from the extended position tothe retracted position to replace the wire 50 without removing thecutting apparatus 10 from the pipeline 300.

Movement of the first cylinder 401 from the retracted position to theextended position relative to the actuator tube 420 may move thecarriage 200 from the extended position to the retracted positionrelative to the frame 100. Movement of the carriage 200 from theextended position to the retracted position relative to the frame 100may move the second end 220 of the carriage 200 toward the second end122 of the first rail 111 of the frame 100 and/or the second end 132 ofthe second rail 112 of the frame 100. Movement of the carriage 200 fromthe extended position to the retracted position relative to the frame100 may move the first connector 21 toward the first end 121 of thefirst rail 111 and/or away from the second end 122 of the first rail111. Movement of the carriage 200 from the extended position to theretracted position relative to the frame 100 may move the secondconnector 22 toward the first end 131 of the second rail 112 and/or awayfrom the second end 132 of the first rail 112. Movement of the carriage200 from the extended position to the retracted position relative to theframe 100 may rotate the seventh column 17 to pivot the first column 11and/or the third column 13 relative to the first connector 21. Movementof the carriage 200 from the extended position to the retracted positionrelative to the frame 100 may rotate the eighth column 18 to pivot thefourth column 14 and/or the sixth column 16 relative to the secondconnector 22.

Movement of the carriage 200 from the extended position to the retractedposition relative to the frame 100 may enable the cutting apparatus 10to be stored and/or to be transported to another location to cut anotherobject. As discussed previously, the movement of the carriage 200 fromthe extended position to the retracted position relative to the frame100 may enable replacement of the wire 50 without removing the cuttingapparatus 10 from the pipeline 300. For example, the movement of thecarriage 200 from the extended position to the retracted positionrelative to the frame 100 may enable replacement of the wire 50 from arear of the cutting apparatus 10 such that a position of the pipeline300 relative to the cutting apparatus 10 may be maintained.

As generally illustrated in FIGS. 20, 21, 22A and 22B, the cuttingapparatus 10 may have a clamp system 500 for aligning the pipeline 300and/or maintaining a position of the pipeline 300 relative to thecutting apparatus 10. The present invention is not limited to a specificmeans of aligning the pipeline 300 and/or maintaining the position ofthe pipeline 300 relative to the cutting apparatus 10. For example, thecutting apparatus 10 may use magnets, a tensioned chain, a tensionedcable and/or the like to align the pipeline 300 and/or maintain theposition of the pipeline 300 relative to the cutting apparatus 10.

The clamp system 500 may have a first bar 501 and/or a second bar 502.The first bar 501 of the clamp system 500 may be substantially parallelto the second bar 502 of the clamp system 500. The clamp system 500 mayhave a third bar 503 and/or a fourth bar 504. The third bar 503 of theclamp system 500 may be substantially parallel to the fourth bar 504 ofthe clamp system 500. The third bar 503 and/or the fourth bar 504 of theclamp system 500 may connect the first bar 501 of the clamp system 500to the second bar 502 of the clamp system 500. The third bar 503 and/orthe fourth bar 504 of the clamp system 500 may be substantiallyperpendicular to the first bar 501 and/or the second bar 502 of theclamp system 500.

In an embodiment, the central plate 102 may be connected to the clampsystem 500. For example, the central plate 102 may be connected to thefirst bar 501 and/or the second bar 502 of the clamp system 500.Alternatively, the central plate 102 may be connected to the frame 100,and the clamp system 500 may enable the central plate 102 to extend fromthe frame 100 and/or between the first bar 501 and/or the second bar 502of the clamp system 500 if the clamp system 500 is attached to thecutting apparatus 10. In an embodiment, the clamp system 500 may beconnected to the cutting apparatus 10 by connecting the first bar 501 ofthe clamp apparatus 500 to the second bar 114 of the cutting apparatus10 and/or by connecting the second bar 502 of the clamp system 500 tothe third bar 115 of the cutting apparatus 10.

The clamp system 500 may have a first rail 511, a second rail 512, athird rail 513 and/or a fourth rail 514 which may be substantiallyparallel to each other. The first rail 511, the second rail 512, thethird rail 513 and/or the fourth rail 514 of the clamp system 500 may beconnected to and/or may be substantially perpendicular to the first bar501, the second bar 502, the third bar 503 and/or the fourth bar 504 ofthe clamp system 500.

The clamp system 500 may have a first clamp 521 and/or a second clamp522. The first clamp 521 may have a first end 590 and/or a second end591 which may be located in a position opposite to the first end 590.The second clamp 522 may have a first end 592 and/or a second end 593which may be located in a position opposite to the first end 592. Thefirst clamp 521 may be connected to the first rail 511 and/or the secondrail 512 of the clamp system 500. The second clamp 522 may be connectedto the third rail 513 and/or the fourth rail 514 of the clamp system500. For example, the first end 590 of the first clamp 521 may bepivotally connected to the first rail 511 and/or the second rail 512 ofthe clamp system 500, and/or the first end 592 of the second clamp 522may be pivotally connected to the third rail 513 and/or the fourth rail514 of the clamp system 500.

In an embodiment, the first clamp 521 may have an upper bar 523 and/or alower bar 524 which may be connected by a first pad 525, and/or thesecond clamp 522 may have an upper bar 526 and/or a lower bar 527 whichmay be connected by a second pad 528. The upper bar 523 and/or the lowerbar 524 of the first clamp 521 may extend from the first end 590 to thesecond end 591 of the first clamp 521. The upper bar 526 and/or thelower bar 527 of the second clamp 522 may extend from the first end 592to the second end 593 of the second clamp 522. The first pad 525 may belocated at the second end 591 of the first clamp 521, and/or the secondpad 528 may be located at the second end 593 of the second clamp 522.The present invention is not limited to a specific embodiment of thefirst clamp 521 and/or the second clamp 522.

The clamp system 500 may have a second actuator 530 which may beconnected to the first bar 501, the second bar 502, the third bar 503and/or the fourth bar 504 of the clamp system 500. The second actuator530 may have a third cylinder 561 which may extend from the secondactuator 530 to connect to a rod 538. For example, extensions 570 may berigidly attached to the rod 538, and/or the third cylinder 561 may bepivotally connected to the extensions 570. The second actuator 530 maymove the third cylinder 561 from a retracted position to an extendedposition relative to the second actuator 530, and/or the second actuator530 may move the third cylinder 561 from the extended position to theretracted position relative to the second actuator 530.

The rod 538 may be substantially perpendicular to the third cylinder561. In an embodiment, the rod 538 may extend from the second rail 512to the fourth rail 514 of the clamp system 500. The rod 538 may beconnected to a third arm 531 and/or a fourth arm 532. For example, therod 538 may have a first end 539 and/or a second end 560 located in aposition opposite to the first end 539. The third arm 531 may bepivotally connected to the second end 560 of the rod 538, and/or thefourth arm 532 may be pivotally connected to the first end 539 of therod 538. The third arm 531 may be connected to the second clamp 522,and/or the fourth arm 532 may be connected to the first clamp 521. Forexample, the third arm 531 may be pivotally connected to the secondclamp 522, and/or the fourth arm 532 may be pivotally connected to thefirst clamp 521.

Movement of the third cylinder 561 may rotate the rod 538. For example,if the second actuator 530 moves the third cylinder 561 from theretracted position to the extended position relative to the secondactuator 530, the third cylinder 561 may rotate the rod 538 in a firstdirection by moving the extensions 570 connected to the rod 538 in adirection away from the second actuator 530. If the third cylinder 561moves from the extended position to the retracted position relative tothe second actuator 530, the third cylinder 561 may rotate the rod 538in a second direction opposite to the first direction by moving theextensions 570 connected to the rod 538 in a direction toward the secondactuator 530.

Rotation of the rod 538 in the first direction may pivot the second end591 of the first clamp 521 and/or the second end 593 of the second clamp522 inward relative to each other. For example, the rotation of the rodin the first direction may push the third arm 531 and/or the fourth arm532 toward the second clamp 522 and/or the first clamp 521,respectively. Rotation of the rod 538 in the second direction may pivotthe second end 591 of the first clamp 521 and/or the second end 593 ofthe second clamp 522 outward relative to each other. For example, therotation of the rod 538 in the second direction may pull the third arm531 and/or the fourth arm 532 away from the second clamp 522 and/or thefirst clamp 521, respectively. The first clamp 521 and/or the secondclamp 522 may align the pipeline 300 with the cutting apparatus 10and/or may maintain a position of the pipeline 300 relative to thecutting apparatus 10 for cutting the pipeline 300 with the wire 50.

Operation of the cutting apparatus 10 and/or the clamp system 500 may becontrolled remotely, such as, for example, by a remotely operatedvehicle interface as known to one having ordinary skill in the art. Forexample, the cutting apparatus 10 may be located underwater to cut apipeline 300 located underwater, and the cutting apparatus 10 may becontrolled from a vessel located at the water surface.

The first actuator 400 and/or the second actuator 530 may be controlledby instructions from a remote location relative to the cutting apparatus10 using the remotely operated vehicle interface. For example, aterminal (not shown) may be located remote relative to the cuttingapparatus 10, and/or the terminal may provide the remotely operatedvehicle interface to a user of the terminal. The terminal may transmitinstructions from the user to the cutting apparatus 10. The terminal,may be, for example, a desktop PC, a personal digital assistant (PDA), amobile telephone, a laptop PC and/or any electronic device which may becapable of receiving and transmitting the instructions to the cuttingapparatus 10. The present invention is not limited to a specificembodiment of the terminal or the instructions.

The instructions may direct operation of the first actuator 400 and/orthe second actuator 530. The instructions may move the carriage 200 fromthe extended position to the retracted position relative to the frame100 and/or may move the carriage 200 from the retracted position to theextended position relative to the frame 100. For example, theinstructions may direct the first actuator 400 to move the firstcylinder 401 from the extended position to the retracted positionrelative to the actuator tube 420. Thus, the instructions may move thecarriage 200 from the retracted position to the extended positionrelative to the frame 100. The instructions may direct the firstactuator 400 to move the first cylinder 401 from the retracted positionto the extended position relative to the actuator tube 420. Thus, theinstructions may move the carriage 200 from the extended position to theretracted position relative to the frame 100.

The instructions may control a feed rate. The feed rate may be a speedof movement of the carriage 200 from the extended position to theretracted position relative to the frame 100 and/or from the retractedposition to the extended position relative to the frame 100. The feedrate may correspond to a speed which the first actuator 430 moves thefirst cylinder 401. Thus, the instructions may increase and/or maydecrease the feed rate by increasing and/or by decreasing the speedwhich the first actuator 430 moves the first cylinder 401.

In an embodiment, a circuit (not shown) may automatically control thefeed rate. Adjustment of the feed rate may maintain a tension in thewire 50 to be equal to a predetermined tension. For example, as thecarriage 200 moves, the tension in the wire 50 may act against a springwhich may be attached to a hydraulic control valve. As the wire 50advances into the pipeline 300, the tension in the wire 50 may increaseso that the spring is deflected. As the spring deflects the hydrauliccontrol valve, flow of hydraulic oil to the first actuator 430 may bereduced. Reduced flow of hydraulic oil to the first actuator 430 maydecrease the feed rate by decreasing the speed of movement of the firstcylinder 401. Therefore, the circuit may direct the first actuator 430to adjust the speed of movement of the first cylinder 401 to compensatefor a size of the pipeline 300, an amount and/or a type of materiallocated in the pipeline 300, and/or other conditions. Accordingly, thefeed rate may be maintained at the predetermined feed rate and/or thetension in the wire 50 may stay constant during cutting of the pipeline300.

As discussed previously, the pulley motor 207 may adjust the speed ofthe motorized pulley to control the feed rate at which the wire 50 maytravel through the first pulley 201, the second pulley 202, the thirdpulley 203 and/or the fourth pulley 204. The remotely operated vehicleinterface may be used by the user and/or the terminal to adjust thespeed of the motorized pulley. Adjustment of the speed of the motorizedpulley may control the wire speed at which the wire 50 travels throughthe first pulley 201, the second pulley 202, the third pulley 203 and/orthe fourth pulley 204. For example, the instructions transmitted fromthe terminal to the cutting apparatus 10 may adjust the speed of themotorized pulley.

The instructions transmitted from the terminal may control pivotinginward and/or outward of the second end 591 of the first clamp 521and/or the second end 593 of the second clamp 522 relative to eachother. For example, the instructions may direct the second actuator 530to move the third cylinder 561 from the retracted position to theextended position relative to the second actuator 530. Movement of thethird cylinder 561 from the retracted position to the extended positionrelative to the second actuator 530 may rotate the rod 538 in a firstdirection by moving the extensions 570 connected to the rod 538 in adirection away from the second actuator 530. Rotation of the rod 538 inthe first direction may pivot the second end 591 of the first clamp 521and/or the second end 593 of the second clamp 522 inward relative toeach other by pushing the first arm 531 and/or the second arm 532 towardthe second clamp 522 and/or the first clamp 521, respectively. Pivotingthe second end 591 of the first clamp 521 and/or the second end 593 ofthe second clamp 522 inward relative to each other may align thepipeline 300 with the cutting apparatus 10 and/or may maintain aposition of the pipeline 300 relative to the cutting apparatus 10 forcutting the pipeline 300 with the wire 50.

The instructions may direct the second actuator 530 to move the thirdcylinder 561 from the extended position to the retracted positionrelative to the second actuator 530. If the third cylinder 561 movesfrom the extended position to the retracted position relative to thesecond actuator 530, the third cylinder 561 may rotate the rod 538 in asecond direction opposite to the first direction by moving theextensions 570 connected to the rod 538 in a direction toward the secondactuator 530. Rotation of the rod 538 in the second direction may pivotthe second end 591 of the first clamp 521 and/or the second end 593 ofthe second clamp 522 outward relative to each other by pulling the firstarm 531 and/or the second arm 532 away from the second clamp 522 and/orthe first clamp 521, respectively. Pivoting the second end 591 of thefirst clamp 521 and/or the second end 593 of the second clamp 522outward relative to each other may release the pipeline 300 aftercutting of the pipeline 300 with the wire 50 is completed and/ordiscontinued.

The cutting apparatus 10 may transmit information to the terminal. Forexample, tools (not shown) may be attached to the cutting apparatus 10,and/or the tools may obtain the information and/or may transmit theinformation to the terminal. For example, one or more of the tools maybe a video camera that may obtain video data and/or may transmit thevideo data to the terminal. The terminal may use the remotely operatedvehicle interface to display the video data to the user. As a furtherexample, one or more of the tools may be a light to enable the videocamera to obtain the video data. As yet another example, one or more ofthe tools may be a sensor that may obtain a temperature of anenvironment in which the cutting apparatus 10 is located and/or apressure of the environment in which the cutting apparatus 10 islocated. The sensor may transmit the temperature and/or the pressure tothe terminal. The terminal may use the remotely operated vehicleinterface to indicate the temperature and/or the pressure to the user.Even further, one or more of the tools may be a positioning tool thatmay determine a location of the cutting apparatus 10 and/or may transmitthe location of the cutting apparatus 10 to the terminal. The terminalmay use the remotely operated vehicle interface to indicate the locationof the cutting apparatus 10 to the user. The present invention is notlimited to a specific embodiment of the information and/or the tools.

It should be understood that various changes and modifications to thepresently preferred embodiments described herein will be apparent tothose skilled in the art. Such changes and modifications may be madewithout departing from the spirit and scope of the present invention andwithout diminishing its attendant advantages.

We claim:
 1. An apparatus for cutting an object, the apparatuscomprising: a carriage having a first end and a second end wherein thesecond end is located in a position opposite to the first end; a firstpulley connected to the carriage wherein the first pulley is adjacent tothe second end of the carriage; a second pulley connected to thecarriage wherein the second pulley is adjacent to the second end of thecarriage and further wherein the second pulley is positioned a distanceaway from the first pulley; a diamond-impregnated wire attached to thefirst pulley and the second pulley wherein the diamond-impregnated wiretravels through the first pulley and the second pulley; and a framehaving a first end and a second end located in a position opposite tothe first end of the frame wherein the carriage is connected to theframe and further wherein the second end of the frame is located at adistance from the second end of the carriage; and a shaft connected tothe second end of the frame wherein an arm which is substantiallyperpendicular to the shaft connects the shaft to the carriage andfurther wherein rotation of the shaft in a first direction pivots thearm to move the carriage from a first position which is substantiallyparallel relative to the frame to a second position relative to theframe and wherein rotation of the shaft in a second direction which isopposite to the first direction pivots the arm to move the carriage fromthe second position to the first position wherein the distance from thesecond end of the frame to the second end of the carriage in the firstposition is less than the distance from the second end of the frame tothe second end of the carriage in the second position.
 2. The apparatusof claim 1 further comprising: an actuator connected to the framewherein the actuator has a tube and a cylinder which extends from thetube wherein the cylinder is connected through a linkage to the carriageand further wherein movement of the cylinder in a first directionrelative to the tube moves the carriage from the first position to thesecond position wherein movement of the cylinder in a second directionrelative to the tube which is opposite to the first direction moves thecarriage from the second position to the first position.
 3. Theapparatus of claim 1 further comprising: a third pulley connected to thecarriage wherein the third pulley is adjacent to the first end of thecarriage and further wherein the wire travels through the first pulley,the second pulley and the third pulley.
 4. The apparatus of claim 1further comprising: a connector that connects the first end of thecarriage to the frame wherein the first end of the carriage is pivotallyconnected to the connector such that the frame and the carriage definean angle between each other wherein the such that an angle between theframe and the carriage in the second position is greater than the anglebetween the frame and the carriage in the first position.
 5. Theapparatus of claim 1 wherein the diamond-impregnated wire iselectroplated with a single layer of diamond beads.
 6. The apparatus ofclaim 1 further comprising: a first rail, a second rail and a barconnected to the frame wherein the first rail and the second rail extendbetween the first end of the frame and the second end of the framewherein the bar connects the first rail to the second rail and furtherwherein the bar is substantially perpendicular to the first rail and thesecond rail wherein the first rail and the second rail are substantiallyparallel to each other.
 7. The apparatus of claim 1 further comprising:a column of the carriage which is pivotally connected to the first endof the frame wherein the column is located at the first end of thecarriage and further wherein rotation of the column in a first directionmoves the carriage from the first position to the second positionwherein rotation of the column in a second direction which is oppositeto the first direction moves the carriage from the second position tothe first position.
 8. The apparatus of claim 1 further comprising: afirst column and a second column of the carriage wherein the firstcolumn and the second column are substantially parallel to each otherand further wherein the first column and the second column extend fromthe first end of the carriage to the second end of the carriage whereinthe first pulley is connected to the first column and the second pulleyis connected to the second column.
 9. The apparatus of claim 1 whereinthe distance from the first end of the frame to the first end of thecarriage in the first position is less than the distance from the firstend of the frame to the first end of the carriage in the secondposition.